A foodborne acute gastroenteritis outbreak caused by GII.P16-GII.2 norovirus in a boarding high school, Beijing, China: a case-control study.

Objective: In December 2017, an acute gastroenteritis outbreak involving 61 students occurred in a boarding high school in Beijing, China. We conducted an outbreak investigation immediately in order to determine the cause of this outbreak and provide effective control measures.

Results: The laboratory inspection showed that this outbreak was caused by GII.

[Etiological detection of severe hand-food-mouth disease and related genetic characteristics of enterovirus type 71 infection in Beijing, 2010].

Objective: To study the etiological detection on samples from severe hand-foot-mouth disease (HFMD) cases and the genetic characteristics of enterovirus type 71 (EV71) isolates from severe patients in Beijing, 2010.

Methods: Real-time RT-PCR was used to detect EV71 and Coxsackievirus A16 (CoxA16) and RD cells were used to separate virus strains from samples. Homogeneity of EV71 isolated strains were also analyzed.

[Analysis on the etiological and molecular epidemiological characteristics of Vibrio parahaemolyticus in Beijing].

Objective: To understand the etiological and molecular-epidemiological characteristics of Vibrio parahaemolyticus in Beijing.

Methods: Stool specimens from sporadic diarrheal patients were collected during April to December, 2010. Culture and serotyping were used to detect the Vibrio parahaemolyticus from the 2118 specimens.

[Etiological surveillance and analysis of infectious diarrhea in Beijing in year 2010].

Objective: To explore the pathogenic form, epidemic features and serotype distribution of the pathogenic bacteria causing infectious diarrhea in Beijing.

Methods: A total of 2118 samples of rectal swabs and stool specimens of diarrheal patients were collected from 6 surveillant intestinal tract clinics during the period between April and October, 2010. Enteric multiple pathogens including Vibrio cholerae, Vibrio parahaemolyticus, Salmonella, Shigella and diarrheagenic Escherichia coli were detected by the isolation culture, biochemical identification and serotyping methods.

[Comparisons of epidemiological and clinical characteristics in children with hand-foot-mouth disease caused by Enterovirus 71 and Coxackievirus A16].

Objective: To compare the differences of epidemiological and clinical characteristics in children with hand-foot-mouth disease (HFMD) caused by Coxsackievirus A16 (CA16) and Enterovirus 71 (EV71).

Methods: The samples of vesicle fluid and throat swabs of 108 children with HFMD were collected and detected for enterovirus by RT-PCR. The clinical data of children with EV71 and CA16 infection were retrospectively reviewed and compared.

[Epidemiological characteristics of infection for close contacts of pandemic (H1N1) 2009 in Beijing].

Objective: To examine the epidemiological characteristics of infection for close contacts of pandemic (H1N1) 2009 and to provide scientific evidence for preparedness and response for the next pandemic.

Methods: A total of 613 index cases with clear information of close contacts and their 7099 close contacts, determined between May 16 and September 15, 2009, were included in this study. Based on data of epidemiological investigation, sampling and test of index cases and close contacts, the characteristics of infection for close contacts were described.

[A survey on serological epidemiology of influenza A (H1N1) 2009 in Beijing].

Objective: To investigate the immunological level against influenza A (H1N1) 2009 in Beijing and provide evidence to evaluate the developing trend of the disease.

Methods: Between Nov. 27, 2009 and Dec.